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frontend/src/App.tsx

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+import React from 'react'
+import { BrowserRouter } from 'react-router-dom'
+import { UserContextProvider } from './contexts/UserContext'
+import { CoreLayout } from './layout/CoreLayout'
+import './scss/App.scss'
+
+function App() {
+  return (
+    <BrowserRouter>
+      <UserContextProvider>
+        <CoreLayout />
+      </UserContextProvider>
+    </BrowserRouter>
+  )
+}
+
+export default App

frontend/src/api/index.ts

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+import { message } from 'antd'
+import axios from 'axios'
+import { User } from '../types'
+import { mockUser } from '../data'
+import { JWT, getJWT, setHeaders, setJWT, wipeJWT } from '../utils/jwt'
+
+const dev = process.env.NODE_ENV === 'development'
+
+export const logIn = async (username: string, password: string) => {
+  if (dev) return mockUser
+
+  try {
+    const { data: jwt } = await axios.post<JWT>(`/api/login`, {
+      username,
+      password,
+    })
+
+    setJWT(jwt)
+
+    const user = await getLoggedInUser()
+    return user
+  } catch (err) {
+    console.log(err)
+    message.error('Error logging in!')
+  }
+}
+
+export const logOut = () => {
+  wipeJWT()
+  // axios -> delete session?
+}
+
+export const getLoggedInUser = async () => {
+  if (dev) return mockUser
+
+  const jwt = getJWT()
+  if (!jwt) throw new Error('User not logged in') // TODO: decorator
+
+  const { data } = await axios.get<User>(`/users/${jwt.id}`, setHeaders())
+  return data
+}

frontend/src/config.ts

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+const namespace = 'mvp-brudda-bwa-bwa'
+
+export { namespace }

frontend/src/contexts/UserContext.tsx

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+import React, {
+  createContext,
+  useContext,
+  useState,
+  useEffect,
+  Dispatch,
+  SetStateAction,
+} from 'react'
+import { message } from 'antd'
+
+import { useHistory } from 'react-router'
+
+import { User } from '../types'
+import { getLoggedInUser, logIn, logOut } from '../api'
+
+type Props = {
+  children: React.ReactNode
+}
+
+type Context = {
+  user: User | null
+  setUser: Dispatch<SetStateAction<User | null>>
+  handleLogin: (username: string, password: string) => void
+  handleLogout: () => void
+}
+
+const UserContext = createContext<Context | null>(null)
+
+export const UserContextProvider = ({ children }: Props) => {
+  const history = useHistory()
+
+  const [user, setUser] = useState<User | null>(null)
+
+  useEffect(() => {
+    const login = async () => {
+      try {
+        const user = await getLoggedInUser()
+        if (!user) throw new Error()
+        setUser(user)
+
+        message.success(`logged in as ${user?.username}`, 0.5)
+      } catch {
+        // this can possibly be handled better
+        message.error('Login Failed')
+        window.location.reload()
+      }
+    }
+
+    login()
+  }, [])
+
+  const handleLogin = async (username: string, password: string) => {
+    try {
+      const user = await logIn(username, password)
+      if (!user) throw new Error('Problem logging in!')
+      setUser(user)
+      message.success(`logged in as ${user?.username}`, 0.5)
+    } catch (err) {
+      message.error('Login Failed!')
+    }
+  }
+
+  const handleLogout = async () => {
+    await logOut()
+    setUser(null)
+    message.success('logged out!', 0.5)
+    history.push('/')
+  }
+
+  return (
+    <UserContext.Provider value={{ user, setUser, handleLogin, handleLogout }}>
+      {children}
+    </UserContext.Provider>
+  )
+}
+
+export const useUserContext = () => {
+  const context = useContext(UserContext)
+
+  if (!context)
+    throw new Error(
+      'UserContext must be called from within the UserContextProvider',
+    )
+
+  return context
+}

frontend/src/data/index.ts

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+import { User } from '../types'
+
+export const mockUser: User = {
+  username: 'TestUser42',
+  id: '4242-4242-4242-4242',
+}

frontend/src/hooks/useGet.ts

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+import { useCallback, useEffect, useState } from 'react'
+import Axios from 'axios'
+import { setHeaders } from '../utils/jwt'
+
+type Options = {
+  subscribe: boolean
+}
+
+export type Response<T> =
+  | {
+      data: T
+      loading: false
+      error: false
+      refetch: () => void
+    }
+  | {
+      data: null
+      loading: false
+      error: true
+      refetch: () => void
+    }
+  | {
+      data: null
+      loading: true
+      error: false
+      refetch: () => void
+    }
+
+export const useGet = <T>(path: string, options?: Options): Response<T> => {
+  const [data, setData] = useState<T | null>(null)
+  const [error, setError] = useState(false)
+
+  const get = useCallback(async () => {
+    try {
+      const { data } = await Axios.get<T>(`/api/${path}`, { ...setHeaders() })
+      setData(data)
+    } catch (err) {
+      setError(true)
+    }
+  }, [path])
+
+  useEffect(() => {
+    get()
+  }, [get])
+
+  if (data) {
+    return { data, loading: false, error: false, refetch: get }
+  } else if (error) {
+    return { data: null, loading: false, error: true, refetch: get }
+  } else {
+    return { data: null, loading: true, error: false, refetch: get }
+  }
+}

frontend/src/index.css

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+@import '~antd/dist/antd.dark.css';
+
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

frontend/src/index.tsx

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+import React from 'react'
+import ReactDOM from 'react-dom'
+import App from './App'
+import reportWebVitals from './reportWebVitals'
+
+import './index.css'
+
+ReactDOM.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+  document.getElementById('root'),
+)
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals()

frontend/src/layout/AppHeader.tsx

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+import React from 'react'
+import { Avatar, Typography } from 'antd'
+import { Header } from 'antd/lib/layout/layout'
+import { User } from '../types'
+import { Link } from 'react-router-dom'
+
+export type NavRoute = {
+  path: string
+  component: any
+  label: string
+  exact?: boolean
+}
+
+type Props = {
+  user: User | null
+  routes?: NavRoute[]
+}
+
+export const AppHeader = ({ user, routes }: Props) => {
+  // Unauthed Header
+  if (!user)
+    return (
+      <Header className="app-header">
+        <Typography.Title level={3}>MVP Django React! 🤠</Typography.Title>
+      </Header>
+    )
+
+  // Authed Header
+  return (
+    <Header className="app-header">
+      <div className="header-left">
+        <Typography.Title level={3}>MVP Django React! 🤠</Typography.Title>
+        {routes?.map((route) => (
+          <Link to={route.path}>{route.label}</Link>
+        ))}
+      </div>
+      <div className="header-right">
+        <Typography.Paragraph>Welcome, {user.username}!!</Typography.Paragraph>
+        <Avatar />
+      </div>
+    </Header>
+  )
+}

frontend/src/layout/CoreLayout.tsx

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+import React from 'react'
+import { Layout } from 'antd'
+import { useUserContext } from '../contexts/UserContext'
+import { Login } from '../pages/Login'
+import { Route, Switch } from 'react-router'
+import { Dashboard } from '../pages/Dashboard'
+import { NavRoute, AppHeader } from './AppHeader'
+import { Profile } from '../pages/Profile'
+
+export const CoreLayout = () => {
+  const { user } = useUserContext()
+
+  const routes: NavRoute[] = [
+    { exact: true, path: '/', label: 'Dashboard', component: Dashboard },
+    { path: '/profile', label: 'Profile', component: Profile },
+  ]
+
+  if (!user)
+    return (
+      <Layout className="layout">
+        <AppHeader user={user} />
+        <Login />
+      </Layout>
+    )
+
+  // header, sidebar, avatar?
+  return (
+    <Layout className="layout">
+      <AppHeader user={user} routes={routes} />
+      <Switch>
+        <Layout.Content>
+          {routes.map(({ exact, path, component }) => (
+            <Route exact={exact} key={path} path={path} component={component} />
+          ))}
+        </Layout.Content>
+      </Switch>
+    </Layout>
+  )
+}

frontend/src/logo.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>

frontend/src/pages/Dashboard.tsx

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+import React from 'react'
+import { RouteChildrenProps } from 'react-router'
+
+type Props = RouteChildrenProps & {}
+
+export const Dashboard = (_: Props) => {
+  return <p>a dashboard</p>
+}

frontend/src/pages/Login.tsx

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+import React, { FormEvent, useState } from 'react'
+import { useUserContext } from '../contexts/UserContext'
+
+export const Login = () => {
+  const { handleLogin } = useUserContext()
+
+  const [username, setUsername] = useState('')
+  const [password, setPassword] = useState('')
+
+  const handleSubmit = (e: FormEvent) => {
+    e.preventDefault()
+
+    handleLogin(username, password)
+  }
+
+  return (
+    <form onSubmit={handleSubmit}>
+      <input
+        onChange={(e) => setUsername(e.target.value)}
+        type="text"
+        value={username}
+      />
+      <input
+        onChange={(e) => setPassword(e.target.value)}
+        type="text"
+        value={password}
+      />
+      <button type="submit">Login!</button>
+    </form>
+  )
+}

frontend/src/pages/Profile.tsx

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+import React from 'react'
+
+type Props = {}
+
+export const Profile = (props: Props) => {
+  return <p>Look, A user profile!</p>
+}

frontend/src/react-app-env.d.ts

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+/// <reference types="react-scripts" />

frontend/src/reportWebVitals.ts

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+import { ReportHandler } from 'web-vitals';
+
+const reportWebVitals = (onPerfEntry?: ReportHandler) => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

frontend/src/scss/App.scss

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+
+.ant-layout-header.app-header {
+  display: flex; 
+  flex-direction: row;
+  justify-content: space-between;
+  vertical-align: middle;
+  padding: 0 1rem;
+
+ a {
+   font-size: 1.2rem;
+   font-weight: bold;
+ }
+
+  div {
+    display: flex;
+    vertical-align: middle;
+    height: 100%;
+
+    * { 
+      margin: auto 0.5rem;
+    }
+
+  }
+
+  h3.ant-typography {
+    
+    margin: auto 0 !important;
+  }
+
+  div.ant-typography {
+    font-size: 1.6rem;
+  }
+}
+
+.ant-layout.layout {
+  min-height: 100vh;
+  // background-color: #444;
+  // color: white;
+}

frontend/src/setupTests.ts

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+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';

frontend/src/types/index.ts

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+export type User = {
+  id: string;
+  username: string;
+};

frontend/src/utils/jwt.ts

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+import { namespace } from '../config'
+
+export type JWT = {
+  id: string
+  token: string
+  exp: number
+}
+
+const getJWT = (): null | JWT => {
+  const id = window.localStorage.getItem(`${namespace}-id`)
+  const token = window.localStorage.getItem(`${namespace}-token`)
+  const exp = parseInt(window.localStorage.getItem(`${namespace}-exp`) || '')
+
+  if (!id || !token || exp < +new Date()) {
+    wipeJWT()
+    return null
+  }
+
+  return {
+    id,
+    token,
+    exp,
+  }
+}
+
+const setJWT = (token: JWT): void => {
+  window.localStorage.setItem(`${namespace}-id`, token.id)
+  window.localStorage.setItem(`${namespace}-token`, token.token)
+  window.localStorage.setItem(`${namespace}-exp`, token.exp + '')
+}
+
+const wipeJWT = (): void => {
+  window.localStorage.removeItem(`${namespace}-id`)
+  window.localStorage.removeItem(`${namespace}-token`)
+  window.localStorage.removeItem(`${namespace}-exp`)
+}
+
+const setHeaders = () => {
+  const token = window.localStorage.getItem(`${namespace}-token`)
+  if (!token) throw new Error('Token gone!')
+
+  return { headers: { Authorization: token } }
+}
+
+export { getJWT, setJWT, wipeJWT, setHeaders }